Problem: Shot was using similarity merely to store
rotation and translation.
There was an incompatibility in that Similarity::ToMatrix
gives scale*rotation*translation while in Shot
the translation stores the viewpoint and the rotation the orientation of the Shot.
In this version, a small class ReferenceFrame was done to play the role of similarity and MultMatrix and MultSimilarity functions were added to transform the frame by multiplying it for a Matrix44 (or applying a similarity).
NOTE: the file export_ply.ply and import_ply.h must also be updated.
-- only compiled with .net ---
a2e3e5b725